Spectral-Time Multiplexing in FRET Complexes of AgInS2/ZnS Quantum Dot and Organic Dyes

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ID: 115079
2020
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Abstract
Nowadays, multiplex analysis is very popular, since it allows to detect a large number of biomarkers simultaneously. Traditional multiplex analysis is usually based on changes of photoluminescence (PL) intensity and/or PL band spectral positions in the presence of analytes. Using PL lifetime as an additional parameter might increase the efficiency of multiplex methods. Quantum dots (QDs) can be used as luminescent markers for multiplex analysis. Ternary in-based QDs are a great alternative to the traditional Cd-based one. Ternary QDs possess all advantages of traditional QDs, including tunable photoluminescence in visible range. At the same time ternary QDs do not have Cd-toxicity, and moreover they possess long spectral dependent lifetimes. This allows the use of ternary QDs as a donor for time-resolved multiplex sensing based on Förster resonance energy transfer (FRET). In the present work, we implemented FRET from AgInS2/ZnS ternary QDs to cyanine dyes absorbing in different spectral regions of QD luminescence with different lifetimes. As the result, FRET-induced luminescence of dyes differed not only in wavelengths but also in lifetimes of luminescence, which can be used for time-resolved multiplex analysis in biology and medicine.
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kuznetsova2020nanomaterialsspectral-time Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Vera Kuznetsova;Anton Tkach;Sergei Cherevkov;Anastasiia Sokolova;Yulia Gromova;Viktoria Osipova;Mikhail Baranov;Valery Ugolkov;Anatoly Fedorov;Alexander Baranov;Kuznetsova, Vera;Tkach, Anton;Cherevkov, Sergei;Sokolova, Anastasiia;Gromova, Yulia;Osipova, Viktoria;Baranov, Mikhail;Ugolkov, Valery;Fedorov, Anatoly;Baranov, Alexander;
Journal Nanomaterials
Year 2020
DOI
10.3390/nano10081569
URL
https://doi.org/10.3390/nano10081569
Keywords
nanoparticles sensing fret cyanine dyes agins2 multiplex analysis ternary quantum dots time-resolved multiplexing

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